Did Mr. Kennedy park his car .......... front .......... our house?

Giới Từ(HÃY GIẢI THÍCH NHA!!)
1.) Did Mr. Kennedy park his car .......... front .......... our house?

a.) at - of          b.) in - to                                 c.) with - to                               d.) in - of                                

2.) Did they ask .......... me?

a.) at                  b.) to                                      c.) before                                  d.) a  fter                                 

3.) An accident has happened .......... that family.

a.) to                  b.) with                                    c.) against                                 d.) for